cxa1646q Sony Electronics, cxa1646q Datasheet

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cxa1646q

Manufacturer Part Number
cxa1646q
Description
Electronic Volume
Manufacturer
Sony Electronics
Datasheet

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Part Number
Manufacturer
Quantity
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Part Number:
CXA1646Q
Manufacturer:
SONY/索尼
Quantity:
20 000
Description
electronic volume IC for car stereos.
Features
• Loudness
• Volume control
• Balance
• Tone control
• Fader
• Input selector (4 channels)
• Serial data control (DATA, CLK, CE)
• Single 8V power supply
• Zero-cross detection circuit
Structure
Absolute Maximum Ratings (Ta = 25°C)
• Supply voltage
• Operating temperature
• Storage temperature
• Allowable power dissipation
Recommended Operating Condition
The CXA1646Q/CXA1767Q is a serial control
(1dB-step from 0dB to –87dB, – dB)
(2dB-step 2 band from –14dB to +14dB)
(2dB-step to –20dB, –25dB, –35dB, –45dB, –60dB, – dB)
Bipolar IC
Supply voltage
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
Electronic Volume
CXA1646Q/CXA1767Q
V
Topr
Tstg
P
V
CC
D
CC
–65 to +150
–40 to +85
6 to 12
350
240
13
– 1 –
mW (Ta = 85°C, 1646Q)
mW (Ta = 85°C, 1767Q)
°C
°C
48 pin QFP (Plastic)
V
V
CXA1646Q
40 pin QFP (Plastic)
CXA1767Q
E92759D7Y

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cxa1646q Summary of contents

Page 1

... CXA1646Q/CXA1767Q Electronic Volume Description The CXA1646Q/CXA1767Q is a serial control electronic volume IC for car stereos. Features • Loudness • Volume control (1dB-step from 0dB to –87dB, – dB) • Balance • Tone control (2dB-step 2 band from –14dB to +14dB) • Fader (2dB-step to –20dB, –25dB, –35dB, –45dB, –60dB, – dB) • ...

Page 2

... STEP 1dB STEP TONE VOLUME VOLUME VCTBUFF VCTBUFF LATCH LATCH CONTROL SHIFT REGISTER VCTBUFF VCTBUFF VOLUME VOLUME TONE 8dB STEP 1dB STEP – 2 – CXA1646Q/CXA1767Q REO1 FADER TEST 21 CLK 20 GND VCT ...

Page 3

... STEP 1dB STEP TONE VOLUME VOLUME VCTBUFF VCTBUFF LATCH LATCH CONTROL SHIFT REGISTER VCTBUFF VCTBUFF VOLUME VOLUME TONE 1dB STEP 8dB STEP – 3 – CXA1646Q/CXA1767Q REO1 20 FADER TEST CLK 17 GND VCT 14 DATA 13 12 INIT ...

Page 4

... INAO2 — 33 (28) INAO1 VCT 5 (4) VRIN2 50k 32 (27) VRIN1 VCT Equivalent circuit Vcc Sets loudness low cut-off frequency. GND Vcc Sets loudness high cut-off frequency. GND Vcc Input selector output GND Vcc Volume input GND – 4 – CXA1646Q/CXA1767Q Description ...

Page 5

... VCT 8 (7) TCLC22 8k 29 (24) TCLC12 VCT 9 (8) TCO2 — 28 (23) TCO1 VCT Equivalent circuit Vcc Sets tone high frequency. GND Vcc Sets tone low frequency. GND Vcc Sets tone low frequency. GND Vcc Tone control output GND – 5 – CXA1646Q/CXA1767Q Description ...

Page 6

... FDIN1 VCT 11 (10) FNTO2 — 26 (21) FNTO1 VCT 13 (11) REO2 — 24 (20) REO1 VCT — 14 (12) INIT — Equivalent circuit Vcc Fader input GND Vcc Front output GND Vcc Rear output GND Vcc System reset GND – 6 – CXA1646Q/CXA1767Q Description ...

Page 7

... GND GND ~ – 21 (17) CLK — — 22 (18) TEST — ~ – 23 (19) CE — Equivalent circuit Vcc Serial data input GND 1 2 +power supply GND Vcc Serial clock GND Test. Leave open. Vcc Latch enable GND – 7 – CXA1646Q/CXA1767Q Description V CC ...

Page 8

... VRF1 –7dB VRC2 – VRF2 –7dB LOUD OFF TONE BASS 0dB TONE TREBLE 0dB FADER 0dB, REAR Equivalent circuit Vcc Sets input amplifier 10k gain to 6dB by connecting to VCT. 10k 0dB at open. GND Vcc Signal input GND – 8 – CXA1646Q/CXA1767Q Description ...

Page 9

... D8 D9 D10 D11 VRF1 D12 D13 D14 VRC2 D15 D16 D17 D18 VRF2 D19 D20 D21 TONE BASS D22 D23 D24 D25 TONE TREBLE D26 D27 D28 D29 FADER D30 D31 D32 FADER SELECT LAST BIT MSB LSB – 9 – CXA1646Q/CXA1767Q ...

Page 10

... Set value D10/D17 D11/D18 – – – – – – – D8/D15 D9/D16 D12/D19 – 10 – CXA1646Q/CXA1767Q ...

Page 11

... FADER SELECT Set value D32 Attenuation of front signal 1 Attenuation of rear signal 0 D22/D26 D30 D31 – 11 – CXA1646Q/CXA1767Q ...

Page 12

... DATA TIMING CE DATA D1 CLK min 0.5µs max 1MHz min 4µs – 12 – CXA1646Q/CXA1767Q D31 D32 min 0.5µs ...

Page 13

... VRC = –16dB Glh 10kHz, VRC = –16dB Gbb Gbc Gtb Gtc Gh GAIN = VCT Vsh DATA, INIT CLK, CE Vsl IN11 to 14 IN21 to 24 Vin VRIN1, 2 FDIN1, 2 – 13 – CXA1646Q/CXA1767Q Min. Typ. Max. Unit — — 0.005 0.01 % — µVrms 8 — — ...

Page 14

... Electrical Characteristic Test Circuit – 14 – CXA1646Q/CXA1767Q ...

Page 15

... Application Circuit – 15 – CXA1646Q/CXA1767Q ...

Page 16

... CXA1646Q/CXA1767Q Tone control characteristics 10 0 –10 10 100 CXA1646Q/CXA1767Q Loud characteristics 0 10 –20 10 100 +14dB +12dB +10dB +8dB +6dB +4dB +2dB 0dB –2dB –4dB –6dB –8dB –10dB –12dB –14dB 1k 10k Frequency [Hz] VRC = 0dB VRC = –8dB VRC = –16dB VRC = –24dB 1k 10k Frequency [Hz] – ...

Page 17

... The loudness function achieves the necessary frequency characteristics by passing through filter shown below. The resistor is built in the IC so that f I LDLC 1 I LDHC 2 and f are set by selecting C and LDLC R2 C LDHC 7.97k 28k 13.2k AGND AGND f L – 17 – CXA1646Q/CXA1767Q . LDHC R1 5.28k C LDLC f H ...

Page 18

... The resistor is built in the IC so that f I //R L TCLC12 TCHC 3 LPF HPF f L and f are set by selecting TLC12 ) 8k R3 TCLC12 8k 8k AGND AGND AGND 10k 10k 10k R3 10k 5k C TCHC AGND AGND – 18 – CXA1646Q/CXA1767Q and C . TCHC f H ...

Page 19

... VCT pin The internal circuit of VCT pin has the following structure. Insert a buffer when using reference voltage for an external circuit. VCT V CC 45k 45k GND – 19 – CXA1646Q/CXA1767Q ...

Page 20

... This product uses S-PdPPF (Sony Spec.-Palladium Pre-Plated Lead Frame). 48PIN QFP (PLASTIC 0.15 0.3 – 0.1 ± 0. 0.35 2.2 – 0.15 PACKAGE STRUCTURE PACKAGE MATERIAL LEAD TREATMENT QFP-48P-L04 LEAD MATERIAL QFP048-P-1212-B PACKAGE WEIGHT – 20 – CXA1646Q/CXA1767Q + 0.1 0.15 – 0.05 0.15 + 0.2 0.1 – 0.1 EPOXY RESIN SOLDER / PALLADIUM PLATING COPPER / 42 ALLOY 0.7g ...

Page 21

... DETAIL A QFP-40P-L01 SONY CODE EIAJ CODE QFP040-P-0707 JEDEC CODE + 0.35 1.5 – 0.15 + 0.1 0.127 – 0. ± 0.12 M PACKAGE STRUCTURE PACKAGE MATERIAL EPOXY RESIN SOLDER / PALLADIUM LEAD TREATMENT PLATING LEAD MATERIAL COPPER / 42 ALLOY PACKAGE WEIGHT 0.2g – 21 – CXA1646Q/CXA1767Q 0.1 ...

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